... time is 100,000hours, use 3pcs 1.5V dry batteries, very good looking 9pcs led headlight:1). 9pc LED light, brightness for ... adjustable 3).use 3pcs 1.5V" AAA" dry battery. (not included) 4). output power:1.35W Battery Replacement:1).Twist to open battery cover. 2).Remove the ... batteries in the correct polarity, and twist the battery cover back(3*1.5V"AAA"size batteries) 1pc/blister box, 100pcs/master ...